Kanagawa, Japan

Koichiro Kamata

This inventor holds 82 USPTO granted patents and 6 published patent applications, primarily in Wireless Power Systems (CPC class H02J5-005). Top assignee: Semiconductor Energy Laboratory Co., Ltd.. Active years: 2010-2023.

USPTO Granted Patents = 82 

% Patents Active = 34.1

Average Co-Inventor Count = 1.5

ph-index = 10

Forward Citations = 289(Granted Patents)

Forward Citations (Not Self Cited) = 258(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • Atsugi, JP (2011)
  • Isehara, JP (2013 - 2017)
  • Kanagawa, JP (2010 - 2023)

Company Filing History:


Years Active: 2010-2023

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Areas of Expertise:
Wireless Power Feeding
Power Receiving Device
Semiconductor Device
Power Feeding System
DC-DC Converter
Contactless Power Feeding
Modulation Circuit
Power Transmission Device
Wireless Communication System
Light-Emitting Device
Display Device
Power Supply System
82 patents (USPTO):Explore Patents

Title: Innovator Spotlight: Koichiro Kamata

Introduction: Koichiro Kamata, a notable inventor based in Kanagawa, Japan, has made significant contributions to the field of semiconductor technology. With a remarkable portfolio of 82 patents, his innovations focus on enhancing power transmission and semiconductor functionalities, reflecting his expertise and dedication to advancing technology.

Latest Patents: Kamata's recent patents showcase his innovative prowess. One of his notable inventions is a **power feeding device** along with a **power receiving device** and a **wireless power feed system**. This wireless power feed system is designed for high transfer efficiency, incorporating a power feeding device with a first electromagnetic coupling coil linked to an AC power source. It features a resonant coil, a switch controlled by a circuit based on the reflective wave parameters, and an analog-digital converter to streamline its operation between the feeding and receiving components.

Another significant invention is a **semiconductor device** and method for driving it, which includes a memory cell consisting of a transistor with a control gate and a storage gate. This innovative design utilizes an oxide semiconductor that can transform between conductivity and insulation based on the potential applied, thus enhancing data storage and retrieval processes.

Career Highlights: Koichiro Kamata is currently employed at the Semiconductor Energy Laboratory Co., Ltd., a leading research institution focusing on semiconductor advancements. His innovative work is instrumental in the development of cutting-edge technologies that push the boundaries of electronic devices and power systems.

Collaborations: Throughout his career, Kamata has collaborated with esteemed coworkers, including Shuhei Maeda and Misako Sato. These collaborations have fostered a creative environment, leading to groundbreaking innovations and furthering the company's mission in semiconductor research and development.

Conclusion: Koichiro Kamata stands out as a distinguished inventor whose contributions to semiconductor technologies and wireless power systems are pushing the frontiers of innovation. His patents not only reflect his ingenuity but also illustrate the potential transformations in power efficiency and semiconductor applications, placing him among the key figures in modern technological advancements.

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